TM 9-2815-225-34&P
3-54.
FUEL INJECTOR TESTING; TEST NO. 2
THIS TASK COVERS:
a. Setting Up Spray Pattern Tester
b. Spray Pattern Test
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
None
SPECIAL TOOLS
TROUBLESHOOTING REFERENCES
Plunger bore plug assembly (15434) ST-668-5012
Table 2-8
TEST EQUIPMENT
EQUIPMENT CONDITION
Injector test stand (15434) ST-790
Fuel injector test No. 1 performed (para. 3-53).
Spray test fixture (15434) ST-668
SPECIAL ENVIRONMENTAL CONDITION
MATERIALS/PARTS
Work area clean and away from blowing dirt and
None
dust.
PERSONNEL REQUIRED
GENERAL SAFETY INSTRUCTIONS
Fuel and electrical systems repairman
None
MOS 63G
LOCATION/ITEM
ACTION
REMARKS
a. Setting Up Spray Pattern Tester
1.
Injector assembly (5)
a. Remove plunger (2), injector
Store plunger (2), spring retainer
spring (4), and spring retainer (3).
(3), and injector spring (4) in a
safe place.
b. Install on adapter (14).
2.
Injector plunger bore of
Install plunger bore plug with
The correct type of plunger bore
injector assembly (5)
rubber seal.
plug and rubber seal is
determined by the type of injector.
3.
Knurled plug (13)
Install on adapter (14) drain
opening.
4.
Seat bracket bore (11)
Install applicable seat spacer.
Use an 18° cup with spacer mark-
ing H-18. Seat spacer is part of
spray test fixture.
5.
Target ring (12)
Place in spray pattern
Select correct target ring (12).
adapter base (10).
Target rings (12) are marked on
handle.
6.
Injector assembly (5)
Place in spray pattern tester (8)
and tighten inlet hose connector (7).
7.
Holddown bracket (15)
Position injector assembly (5) in
holddown bracket (15) and secure
with knurled plug (13).
8.
Spray pattern tester (8)
Locate near or on injector test
Any source of 22 psi (152 kPa)
stand (1).
constant fuel pressure will operate
spray pattern tester.
3-358
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